A race condition was discovered in get_old_root in fs/btrfs/ctree.c in the Linux kernel through 5.11.8. It allows attackers to cause a denial of service (BUG) because of a lack of locking on an extent buffer before a cloning operation, aka CID-dbcc7d57bffc.

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-2689-1 linux security update
Debian DLA Debian DLA DLA-2690-1 linux-4.19 security update
EUVD EUVD EUVD-2021-15613 A race condition was discovered in get_old_root in fs/btrfs/ctree.c in the Linux kernel through 5.11.8. It allows attackers to cause a denial of service (BUG) because of a lack of locking on an extent buffer before a cloning operation, aka CID-dbcc7d57bffc.
Ubuntu USN Ubuntu USN USN-4948-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-4979-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-4982-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-4984-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5361-1 Linux kernel vulnerabilities
Fixes

Solution

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Workaround

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-03T21:55:12.125Z

Reserved: 2021-03-22T00:00:00

Link: CVE-2021-28964

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-03-22T09:15:13.517

Modified: 2024-11-21T06:00:27.570

Link: CVE-2021-28964

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-03-16T00:00:00Z

Links: CVE-2021-28964 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses